2026 QUESTIONS WITH SOLUTIONS GRADED
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◉ What is the maximum number of stages of a HP compressor?
Answer: 6
◉ How often are readings taken on an HPAC? Answer: Hourly
◉ What valves are used to control or limit flow to the compressed
air system? Answer: Relief valves
◉ When working on HP air system, the system should be tagged out
and depressurized. (TRUE/FALSE) Answer: True
◉ What is distillate? Answer: Remove salt from seawater / purified
◉ What PSI is needed to separate salt from seawater in the RO
system? Answer: 350-400 PSIG
◉ What is the waste material that is pumped over board from the
distilling process? Answer: Brine
,◉ What controls steam pressure to the seawater feed heater?
Answer: LP flash type
◉ What component maintains the filters and is vital to the
performance of the RO Plant? Answer: The Membrane
◉ Which component is the central control of the RO plant? Answer:
Main control panel
◉ How many flow meters are in the RO plant? Answer: 2
◉ The lowest temperature at which a liquid gives off vapors that
could ignite is called? Answer: Flash point
◉ Pressure exerted on a confined liquid is transmitted in all
directions, and acts with equal force on all areas, is an example of
what law? Answer: Pascal's law
◉ What type of actuator is used to apply linear force to a
mechanism? Answer: RAM cylinder
◉ What is force measured in? Answer: Pounds in tons
,◉ Laminar flow is an erratic and turbulent flow. (TRUE/FALSE)
Answer: False
◉ What rating measures the ability of the element to remove the
contaminants? Answer: Efficiency rating
◉ What valve maintains hydraulic system pressure? Answer:
Unloading valve
◉ What converts hydraulic energy generated by a pump back into
mechanical energy? Answer: Actuator
◉ What documentation is used to preform maintenance on the
hydraulic system? Answer: PMS (PLANNED MAINTENANCE
SYSTEM)
◉ What component is used to remove large contaminants from the
suction side of a hydraulic pump? Answer: Strainer
◉ What is used to align the hydraulic system? Answer: EOSS
◉ What fluids can be used in the hydraulic system? Answer:
Pretoleum- Based, Water Based and Synthetics (Five resistance fluid
/ Hydrocarbon Fluid)
, ◉ What is the measurement of Fluid's resistance to flow? Answer:
Viscosity drag
◉ What converts linear movement of the ram to radial movement of
the rudderpost? Answer: Piston
◉ What type of pump is the HPU main pump? Answer: Axial piston
pump
◉ How many modes of operation does a vertical package conveyor
have? Answer: 4
◉ How many modes of steering gear operation do DDG-51 class
ships have? Answer: 5
◉ What maintains the ship's heading and carries out course
changes? Answer: Steering gear
◉ What component will compare the ordered and actual rudder
angle indicators? Answer: TURN HELM WHEEL
◉ What color valve is hydraulies? Answer: Orange